# HG changeset patch
# User nkeynes
# Date 1330860528 -36000
# Node ID e1314ad3e7ccb965c831600f5ab5bdd37f61d729
# Parent  a9d29fe74bf3f99faadd2d95b3fb71f387626899
Fix have_shaders in glrender.c
Set negative fog for lut when using shaders

--- a/src/pvr2/glrender.c	Sun Mar 04 21:10:12 2012 +1000
+++ b/src/pvr2/glrender.c	Sun Mar 04 21:28:48 2012 +1000
@@ -115,6 +115,7 @@
  */
 void pvr2_setup_gl_context()
 {
+    have_shaders = display_driver->capabilities.has_sl;
 #ifdef APPLE_BUILD
     CGL_MACRO_CONTEXT = CGLGetCurrentContext();
 #endif
--- a/src/pvr2/scene.c	Sun Mar 04 21:10:12 2012 +1000
+++ b/src/pvr2/scene.c	Sun Mar 04 21:28:48 2012 +1000
@@ -385,8 +385,11 @@
         uint32_t index = pvr2_scene.poly_array[i].vertex_index;
         if( mode == PVR2_POLY_FOG_LOOKUP ) {
             for( j=0; j<pvr2_scene.poly_array[i].vertex_count; j++ ) {
-                pvr2_scene.vertex_array[index+j].offset_rgba[3] = 
-                    scene_compute_lut_fog_vertex( pvr2_scene.vertex_array[index+j].z, fog_density, fog_table );
+                float fog = scene_compute_lut_fog_vertex( pvr2_scene.vertex_array[index+j].z, fog_density, fog_table );
+                if( display_driver->capabilities.has_sl )
+                    pvr2_scene.vertex_array[index+j].offset_rgba[3] = -fog;
+                else
+                    pvr2_scene.vertex_array[index+j].offset_rgba[3] = fog;
             }
         } else if( mode == PVR2_POLY_FOG_LOOKUP2 ) {
             for( j=0; j<pvr2_scene.poly_array[i].vertex_count; j++ ) {